Improvement in sawing-machines



2 Sheets Sh em 1.

c. H. SMITH Sawing-Machines;

Patented April 8, 1873.

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2 Sheets--Sheet 2.

C. H. SMITH.

Sawing-Machines. V No. ,l37,626. PatentedApril8,l873.

wimwmz UNITED STATES PATENT OFEIoE.

CHARLES H. SMITH, OF FARIBAULT, MINNESOTA.

IMPROVEMENT m SAWlNG-MACHINES.

Specification forming part of Letters Patent No. 137,626, dated April 8,1873; application filed February 8, 1873.

, To all whom it may concern:

Be it known that I, CHARLES H. SMITH, of Faribault, in the county ofRice and State of Minnesota, have invented a new and ImprovedWood-Sawing Machine, of which the following is a specification: v

The invention consists in the improvement of wood-sawing machines, ashereinafter described and subsequently pointed out in the claims.

Figure 1 is a side elevation of my improved wood-sawing machine. Fig. 2is a plan view of the machinery and horizontal section of the house forinclosin g it, and Fig. 3 is a transverse sectional elevation taken onthe line as w of Fig. 1.

Similar letters of reference indicate corresponding parts.

A is the platform. It is mounted on carwheels B, and has a handcrank, G,which gears, by the wheels D, with one of the axles for moving themachine up to the pile of wood from time to time. E represents a coupleof circular saws mounted on an arbor, F, near one corner of theplatform, and raised in suitable supports above the platform. One saw ison the end of the arbor and directly above the edge of the platform. Theother is as far inward of the platform as the length to which the woodis to be out, and beyond this the mandrel projects sufficiently for theapplication of the drivingbelt G, which works on a pulley, I, from alarge pulley on the driving-shaft H, to which the engine which is to bemounted on the platform will be connected. The inside collars K,forclamping the saws on the arbor, are slightly convex, and the outsidecollars L are correspondingly concave to concave the saws on the sidesfronting each other, as represented in Fig. 3, so that the middle piecesof wood will not bind at the ends with the saws, particularly along themiddle. The collars L are screwed up against the saws on threadspitched, so that in case the saws get bound or cramped in the wood toohard they will unscrew and release the saws. M represents a wood rackprojecting forward from the space between the saws and inclining upward,on which the wood is placed as it is taken from the pile to be presentedto the saws. At the bottom of this rack is an endless carrier or table,consisting of the machine-chains N and projecting arms 0 working overthe rollers P Q, which takes the long pieces of wood laid on the rackone by one, and carries them up to the saws, and carries the middlepieces beyond them to the point B, where it discharges them to theelevator S. The end pieces fall down the chutes T to the same elevator,and all are carried by it up to the point U, from which they aredelivered to pilers. Aplatform or stand, L, projects from the side ofthe platform A nu der the front of the saws for the sawyer to stand onfor overlooking the saws and adjusting the wood on the carrier, ifnecessary, as it is presented to the saws. This platform swings underthe main platform when not in use. The roller Q of the carrier N O isdriven by the belt W and counter-shaft X, and the elevator is driven bythe belt Y, which works from the crank-shaft H onto a pulley, Z, on theupper roller.

The guard over the saws to protect the attendants from them consists ofa light frame of two bars, a, pivoted at b, and cross-bars d extendingfrom one to the other over the saws. A cord, 0, connected to the frontend and passing over the pulley f, hangs down at y, where it isconvenient to be reached by the sawyer to swing the frame up away fromthe saws when they are to be filed. h represents the presser-bars forholding the wood on the carrier and controlling it. They consist of anumber of right-angled bars pivoted at one end to the under side of theguard-frame, near the front of the saws, and extending rearward at theother ends along the space between the saws, about to the rear of them.They are so numerous and such different lengths that they are adapted topieces of wood of all sizes within the common range. The pieces of woodare carried against the knives of these bars before they are entirelyout off, and swing them back until they pass under them, and the barsthen rest on the pieces until they pass beyond the saws. These barsbeing connected to the guard-frame are lifted out of the way with itwhen the saws are to be filed.

Having thus described my invention Iclaim as new and desire to secure byLetters Pat- 3. The relative arrangement of the woodent rack, endlesscarrier, saws, and elevator with '1. The wood-holding triangles pendentbethe truck-frame or movable platforms A, subtween the saws andpreventing the wood from stantia-lly as specified.

falling or being thrown out, as described. CHARLES H. SMITH.

2. The combination of the chutes T with the Witnesses:

saws and the elevator, substantially as speei- THOMAS S. BUOKHAM,

fied. T. B. CLEMENT.

